Question: Which is the crystal system of an amorphous solid?
SPARQL (Wikidata): select distinct ?answer where { ?answer wdt:P556 wd:Q103382}
Answer: opal, evansite, diadochite, allophane, delvauxite, lechatelierite, santabarbaraite, bolivarite, belyankinite, cadwaladerite, georgeite, gerasimovskite, jordisite, karnasurtite-(Ce), manganbelyankinite, metastibnite, meymacite, neotocite, pitticite, rosièresite, thorosteenstrupine, umbozerite, siderogel